Remove a few unnecessary #includes

Change-Id: I47c0f097f91c7cac7af91a15326e73ca201952ad
Reviewed-on: https://gerrit.libreoffice.org/3448Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>

chart2/source/controller/dialogs/dlg_InsertLegend.cxx

@@ -22,14 +22,8 @@
 #include "res_LegendPosition.hxx"
 #include "ObjectNameProvider.hxx"
 #include "ResId.hxx"
-#include "chartview/ChartSfxItemIds.hxx"
 #include "NoWarningThisInCTOR.hxx"
 
-// header for enum SvxChartLegendPos
-#include <svx/chrtitem.hxx>
-// header for class SfxItemPool
-#include <svl/itempool.hxx>
-
 //.............................................................................
 namespace chart
 {